JP2003159625A - Machining device for terminal part of printed board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To chamfer the terminal part of a printed board with high accuracy. <P>SOLUTION: A cutter, which moves in the lateral direction to a table 3, and a plurality of pin-like stoppers 30 apart laterally are provided on the machine base 2 side, an abutting face 30b, which can be brought into contact with the end face of the terminal part of the printed board 45 laid on the table 3, is provided at one end part of each stopper 30, and at the same time, the abutting face 30b is positioned on the lateral movement machining axis of the cutter and an advancing/receding device for the stopper 35, which moves the stoppers 30 to the machining axis and to the position apart from the machining axis, is provided. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board terminal processing apparatus for chamfering a printed circuit board terminal.

[0002]

2. Description of the Related Art Conventionally, a printed circuit board is moved along a ruler provided on a table side, and a terminal portion of the printed circuit board is chamfered by a cutter arranged at a fixed position.

[0003]

In the above-mentioned prior art, the printed circuit board is moved with reference to the one end face of the outer periphery thereof. Therefore, if the processing accuracy of the outer peripheral end face of the printed circuit board is incorrect, the terminal portion Therefore, the chamfering process cannot be performed with high accuracy. Further, if the terminal portion is formed in the hole inside the substrate in a state of being displaced from the outer peripheral end face of the printed circuit board, it is difficult to chamfer the terminal portion. It is an object of the present invention to provide a novel printed circuit board terminal processing apparatus which solves the above-mentioned problems by providing a stopper on the processing axis of the cutter movement line and bringing the terminal section of the printed circuit board into contact with the stopper. .

[0004]

The present invention is configured as follows in order to achieve the above object. That is, the invention according to claim 1 is provided with a cutter that moves in the left-right direction with respect to the table on the machine base side, and a plurality of pin-shaped stoppers that are separated from each other in the left-right direction, and mounts on the table at one end of each stopper. A contact surface that can contact the end surface of the terminal portion of the printed circuit board is provided, and the contact surface is located on the horizontal movement processing axis of the cutter, and the stopper is located at a position apart from the processing axis and the processing axis. The configuration is such that a stopper advancing / retracting device for moving to and is provided. In the invention according to claim 2, a moving body that moves in the left-right direction with respect to the table is provided on the machine base side, and a cutter and a reference guide are provided in the moving body in parallel in the left-right direction, and the reference guide is provided. A stopper that holds a reference surface located on the machining axis of the cutter, and moves each stopper until it abuts the reference surface, and holds the stopper when the abutment surface is located on the machining axis. An adjusting tool is provided, and a reference guide advancing / retreating device for moving the reference guide to the machining axis and a position apart from the machining axis is provided. According to a third aspect of the present invention, each of the stoppers is tilted rearward so that one end of the stopper faces the front side of the printed circuit board and supported vertically adjustable on the machine base side. The contact surface is a conical surface perpendicular to the table surface.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a rear view of a main part of a terminal processing apparatus according to an embodiment of the present invention, and FIG. 2 is a II-I of FIG.
1 is a sectional view corresponding to I, FIG. 3 is a sectional view corresponding to III-III in FIG. 1 showing a positioning state of a printed circuit board by a stopper, FIG. 4 is a sectional view corresponding to FIG. 3 showing a processing state of a terminal portion, and FIG. Plan view of the printed circuit board shown in Fig. 6, and Fig. 6 is VI-VI of Fig. 5.
FIG.

In FIG. 1, reference numeral 1 is a device for processing a terminal portion of a printed circuit board, 2 is its machine base, and a table 3 on which a printed circuit board 45 is mounted is mounted on an upper part of a front frame 2a of the machine base 2. A plate-shaped moving body 4 which stands up and down is attached to a lower portion via a rail 5 so as to be movable in the left-right direction. The cutter 6 and the reference guide 7 are attached to the moving body 4 in parallel in the left-right direction. The cutter 6 and the reference guide 7 are
It is attached to the moving body 4 via the cutter advancing / retreating device 10 and the reference guide advancing / retreating device 25 so as to be able to move forward and backward.

The cutter advancing / retreating device 10 is as follows. That is, the rocking base 11 bent in an L shape is attached to the back side of the moving body 4 so as to be rotatable about the axis line in the left-right direction, and the mounting plate 12 is slid up and down on the upright side 11a of the rocking base 11. Install as possible. A spindle 14 is rotatably attached to an upper side of the mounting plate 12 via a bearing 13 and an end mill type cutter 6 is detachably attached to an upper portion of the spindle 14. In addition, a cutter motor 16 is provided below the mounting plate 12 via an arm 15.
Is attached, and the rotary shaft of the cutter motor 16 and the spindle 14 are conductively connected via a belt 17.

An arcuate driven gear 17 is attached to the right part of the rocking base 11, and a pinion gear 18 meshing with the driven gear 17 and a swing for rotating the pinion gear 18 are attached to the side plate 4a on the right part of the moving body 4. The moving motor 19 is attached. Then, by controlling the rotation of the swing motor 19, the swing base 11 is rotated in the front-rear direction about the axis line in the left-right direction, and the chamfer angle of the cutter 6 is set.

An elevating screw 21 rotated by an elevating motor 20 is attached to the lower side 11b of the rocking base 11 so as to be directed upward, and the elevating screw 21 is screwed to a nut 22 attached to the arm 15 of the mounting plate 12. Then, the cutter 6 is moved up and down via the mounting plate 12 by controlling the rotation of the lifting motor 20. That is, during the chamfering process, the elevating motor 20 is rotated in the forward direction to move the cutting edge of the upper end of the cutter 6 on the left and right moving machining axes, and when not machining, the elevating motor 20 is rotated in the backward direction. The cutter 6 is retracted downward from above the processing axis.

The reference guide 7 and the reference guide advancing / retreating device 25 described above are as follows. That is, a pair of left and right brackets 26 are attached to the left side on the back side of the moving table 4,
A fulcrum pin 27 is laid across the bracket 26 in the horizontal direction,
The reference guide 7 is swingably supported in the front-rear direction via the fulcrum pin 27. The reference guide 7 is bent and formed in an inverted L shape by a plate material, the upper side 7a is extended in the direction of the cutter 6 (to the right), and the lower end of a stopper 30 described later abuts on the upper right end of the upper side 7a. To form.

The reference guide 7 is biased in the backward direction by the reaction force of the return spring 28 (FIG. 2) arranged on the upper side of the fulcrum pin 27 so that the upper side 7a moves rearward, and the lower side of the fulcrum pin 27 is urged. The cylinder 29 attached to the lower side of the reference guide 7 located at 7 is rotated forward so that the upper side 7a is located forward. As shown in FIG. 2, the cylinder 29 has its rod 29a projected forward so that the moving body 4
The reference pin 7 by pressing the fulcrum pin 2
7 is rotated forward, and the reference surface 7b is positioned on the left and right moving machining axes.

The stopper 30 determines the forward movement position of the printed circuit board 45 placed on the table 3, as shown in FIG.
As shown in FIG. 1, an upper frame 2b extending in the left-right direction in FIG. 1 is attached to the rear upper surface of the machine base 2, and a plurality of, in this example, four support arms 31 are attached to the upper frame 2b so that the respective left and right movements can be adjusted. Also, it is attached so that it can be moved back and forth. Each support arm 31 is projected forward (to the right in FIG. 2), and a pin-shaped stopper 30 is attached to the front end of each support arm 31 via a holder 32 so as to be vertically slidable.

Each of the stoppers 30 has a lower end portion 30.
The rear end 30a is attached to the holder 32 so as to be slidable vertically so that a is directed toward the front side of the printed circuit board 45, and the lower end portion 30a has a contact surface (right surface in FIG. 2) 30b with which the printed circuit board 45 contacts. It is formed in a conical surface perpendicular to the surface of the table 3. Here, the printed circuit board 45, as shown in FIGS.
A large number of pattern circuits (not shown) are formed in parallel within 5a, and each pattern circuit has a terminal portion 45b for connection.
Have. Of these, a hole 45c is formed in the substrate 45a at the front of the terminal portion 45b-1 of the pattern circuit located inside, and the end surface of the terminal portion 45b-1 is exposed to the outside. Lower end 3 of each stopper 30
0a, that is, the conical portion, as shown in FIG.
5c can be fitted in.

The stoppers 30 are individually moved up and down by a stopper advancing / retreating device 35. That is, as shown in FIG. 2, the cylinder 36 is arranged in parallel with the stopper 30 on the upper part of the holder 32 and is fixed upside down.
A clamp 37 is attached to the rod 36a of 6, and the stopper 30 is clamped by the clamp 37. And
When the cylinder 36 is extended and the stopper 30 is moved downward, as shown in FIG. 2, the contact surface 30b of the stopper 30 is a regulation line L orthogonal to the machining axis.
When the cylinder 36 is located on the upper side and the cylinder 36 is shortened and the stopper 30 is moved upward, the contact surface 30b moves rearward from the regulation line L as shown by the phantom line in FIG. Make sure to evacuate to

Reference numeral 38 denotes a stopper adjusting tool for finely adjusting each stopper 30 in the vertical direction.
A screw is formed on the upper end of the holder, and the screw is screwed into a nut 38a provided on the upper portion of the holder 32, and the stoppers 30 are rotated in a predetermined direction on the upper side to finely adjust in the vertical direction. Has become. In this case, when rotating each of the stoppers 30 in the predetermined direction, the clamp 37 described above is loosened. Fine adjustment of the stoppers 30 in the vertical direction is performed as follows before chamfering. That is, first, the reference guide 7 is moved to a predetermined stopper 30 position via the moving body 4, and then the reference guide 7 is moved to the front side by the cylinder 29 so that the reference surface 7b is on the machining axis of the cutter 6. Located in.

Then, the clamp 37 is loosened to release the predetermined stopper 30 from being held, and then the stopper advancing / retracting device 35 is released.
The cylinder 36 is extended and the stopper 30 is rotated in a predetermined direction in this state so that the lower end of the cylinder 36 is brought into contact with the reference surface 7b, or a gauge is used to position the stopper 30 above the reference surface 7b by a predetermined amount. The contact surface 30b of the stopper 30 is positioned on the regulation line L orthogonal to the above-mentioned machining axis (FIG. 2). Next, the clamp 37 is tightened to fix the stopper 30 to the rod 36a side of the cylinder 36. Thereby, the contact surface 3 of the stopper 30 is
0b is positioned by the reference guide 7 that moves in the left-right direction in synchronization with the cutter 6, and is positioned with high accuracy.

In FIG. 1, reference numeral 40 denotes a feed screw which is attached to the lower portion of the machine base 2 so as to extend in the left-right direction, and the feed screw 40 is screwed with a connecting nut 41 attached to the lower portion of the moving body 4. . The feed screw 40 is rotationally controlled by a feed motor (not shown) to control the movement of the moving body 4 in the left-right direction. In FIG. 2, reference numeral 42 denotes a work clamp for pressing and fixing the printed circuit board 45 mounted on the upper surface of the table 3 to the table 3.

Next, a processing mode of the terminal portion 45b of the printed board 45 will be described. First, as shown in FIG. 3, after the two left and right stoppers 30 are lowered via the stopper advancing / retreating device 35, the printed board 45 placed on the table 3 is moved leftward in FIG. Part 45
Two left and right positions of the front end of b (45b-1) are brought into contact with the contact surfaces 30b of the stoppers 30. In this case, the left and right intervals of the two left and right stoppers 30 are adjusted to be slightly smaller than the left and right width of the terminal portion 45b of the printed circuit board 45 mounted on the table 3. Then, the work clamp 42 is lowered to fix the printed circuit board 45 to the table 3. As a result, the front end edge of the terminal portion 45b is accurately positioned on the left and right processing axes of the cutter 6.

Next, after the cylinder 36 of the stopper advancing / retreating device 35 is shortened to retract the stopper 30 upward, the elevating motor 20 of the cutter advancing / retreating device 10 is rotated in the forward direction to cut the upper end of the cutter 6. The blade is moved along the machining axis (FIG. 4), and in this state, the feed screw 40 is rotated through the feed motor to move the cutter 6 in the left and right directions to move the predetermined terminal portion 45b of the printed circuit board 45. Chamfer the bottom edge. After the chamfering of the predetermined terminal portion 45b is completed, the cutter 6 is retracted downward from the machining axis via the cutter advancing / retreating device 10. By repeating the above operation, the terminal portion 45 at the subsequent stage is sequentially provided.
B (45b-1) is chamfered. The cutter 6 and the reference guide 7 described above may be arranged on the upper side of the machine base 2, and the stopper 30 may be arranged on the lower side of the machine base 2.
In this case, the advancing / retreating device for moving them forward and backward, the moving body, and the like are also arranged on the opposite sides.

[0020]

As is apparent from the above description, the invention according to claim 1 of the present application provides a plurality of pin-shaped stoppers on the processing axis line on which the cutter moves, and each stopper is provided on the end surface of the terminal portion of the printed circuit board. Since the printed circuit board is positioned by abutting against, the processing accuracy of the outer peripheral end surface of the printed circuit board is not affected, and the chamfering process of the terminal portion can be performed with high accuracy. Moreover, even if the terminal portion is located in the hole inside the substrate, the terminal portion can be positioned with high accuracy and chamfered. In the invention according to claim 2, the cutter and the reference guide are provided in parallel in the left-right direction on the moving body that moves in the left-right direction with respect to the table, and the reference surface of the reference guide is on the left-right movement processing axis line of the cutter. Since the stopper is brought into contact with the reference surface to set the position of the stopper,
The initial position of the stopper can be set with high accuracy. According to a third aspect of the present invention, the stoppers are tilted rearward so that one ends of the stoppers face the front side of the printed circuit board, and are vertically adjustable and supported on the machine base side. Since the contact surface is a conical surface perpendicular to the table surface, one end of each stopper fits smoothly into the hole inside the board, and the terminal of the hole is positioned with high accuracy. You can do it.

[Brief description of drawings]

FIG. 1 is a rear view of a main part of a terminal portion processing apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view corresponding to II-II in FIG.

FIG. 3 is a cross-sectional view corresponding to III-III in FIG. 1 showing a printed circuit board positioning state by a stopper.

FIG. 4 is a cross-sectional view corresponding to FIG. 3 showing a processed state of a terminal portion.

FIG. 5 is a plan view of a printed circuit board to be processed.

6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

1 Terminal processing equipment for printed circuit boards 2 units 2a front frame 2b upper frame 3 tables 4 moving body 4a side plate 5 rails 6 cutter 7 Standard guide 7a Upper side 7b Reference plane 10 Cutter advancing / retreating device 11 rocking platform 11a Standing edge 11b lower side 12 Mounting plate 13 bearings 14 spindles 15 arms 16 cutter motor 17 Driven gear 18 pinion gear 19 Swing motor 20 lifting motor 21 Lifting screw 22 nuts 25 Standard guide advancing / retreating device 25a rod 26 bracket 27 fulcrum pin 28 Return spring 29 cylinders 29a rod 30 stopper 30a lower end 30b contact surface 31 Support arm 32 holder 35 Stopper advancing / retreating device 36 cylinders 36a rod 37 Clamp 38 Stopper adjuster 40 lead screw 41 Connection nut 42 Work clamp 45 parts and substrate 45a substrate 45b (45b-1) terminal part 45c hole

Claims (3)

[Claims] 1. A cutter (6) that moves in the left-right direction with respect to a table (3) on the machine base (2) side, and a plurality of pin-shaped stoppers (30) that are separated from each other in the left-right direction. A contact surface (30b) that can contact the end surface of the terminal portion (45b) of the printed circuit board (45) mounted on the table (3) is provided at one end of the (30), and the corresponding contact surface (30b). Is provided with a stopper advancing / retracting device (35) which is located on the horizontal movement processing axis of the cutter (6) and moves the stopper (30) to the processing axis and a position away from the processing axis. A printed circuit board terminal processing device. 2. A moving body (4) which moves in the left-right direction with respect to the table (3) is provided on the machine base (2) side, and the moving body (4) is provided.
A cutter (6) and a reference guide (7) are provided in parallel in the left-right direction, and the cutter (6) is attached to the reference guide (7).
A reference surface (7b) located on the machining axis is provided, and each stopper (30) is moved until it abuts on the reference surface (7b) so that the abutment surface (30b) is on the machining axis. A reference guide advancing / retreating device (25) provided with a stopper adjuster (38) for holding the stopper (30) when the reference guide (7) is located and moving the reference guide (7) between the machining axis and a position apart from the machining axis. The terminal device processing apparatus for a printed circuit board according to claim 1, further comprising: 3. Each stopper (30) has one end (30).
a) is tilted rearward so as to face the front side of the printed circuit board (45) and is supported vertically adjustable on the machine base (2) side, and the one end (30a) is in contact with the printed circuit board (45). (30
3. The device for processing a terminal portion of a printed circuit board according to claim 1, wherein b) is a conical surface perpendicular to the table surface.